Mcq on diamagnetism, paramagnetism, magnetic susceptibility with answer
Answers
1. Which of the following parameter is used to assess magnetic ability of material?
a) Magnetic flux density
b) Magnetization
c) Magnetic dipole moment
d) Susceptibility
2. For diamagnetic material, which of the following is correct?
a) Magnetic susceptibility < 0
b) Magnetic susceptibility > 0
c) Magnetic susceptibility = 0
d) None of the mentioned
3. If relative permeability is denoted by μr, which of the following is correct about diamagnetic material?
a) Relative permeability = 0
b) Relative permeability < 1
c) Relative permeability > 1
d) None of the mentioned
4. For paramagnetic material, which of the following is correct?
a) Magnetic susceptibility < 0
b) Magnetic susceptibility > 0
c) Magnetic susceptibility = 0
d) None of the mentioned
5. If relative permeability is denoted by μr, which of the following is correct about paramagnetic material?
a) Relative permeability = 0
b) Relative permeability < 1
c) Relative permeability > 1
d) None of the mentioned
6. Paramagnetic Curie temperature in Kelvin for iron is equal to :
a) 2195
b) 495
c) 895
d) 1095
7. With increase in temperature magnetic susceptibility of ferromagnetic material.
a) Increases
b) Decreases
c) Remains constant
d) None of the mentioned
8. With increase in temperature magnetic susceptibility of anti-ferromagnetic material.
a) Increases
b) Decreases
c) First decreases then increases
d) First increases then decreases
9. With increase in the area of hysteresis curve, power loss will
a) Increases
b) Decreases
c) First decreases then increases
d) First increases then decreases
10. Magnetic Bubbles are used as :
a) Storage device
b) Strain gauge
c) Thermostat
d) None of the mentioned
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Answer:1.= a
2=b
3=c
4=a
5=d
6=b
7=a
8=c
9=a
10=b
Explanation:each